Kelly Osbourne launched a foul-mouthed tirade against her ex-fiance on twitter today (28.12.10).
It seems Kelly has now discovered the cheating rumours are true and took to her page on the micro-blogging site to tell her followers what she thinks of Luke and warned other girls not to date him.
Kelly - who has returned to England to be with her family for the festive period - tweeted: "What do you do when someone lies in the darkest way and you try to tell the person that was lied 2 but they don't believe you? (sic)"
Her scathing attack then began, with her writing: "@Luke_worrall is the biggest piece of s**t he has been trying to get back w/ me I only came home for Xmas to see him meanwhile he has been . F***ing 100's of girls as well as men behind my back all he did was use me all girls beware of @Luke_worral he is a using ****!
"He used me for my money and a free ride he is lucky I am not spilling the hole truth about what he did !
"He is the worst thing that ever happened to me I don't give a f***k what happens to him anymore . I am and always will be 2 good 4 @luke_worrall darling ur pretty face will only get you so far because u don't have the brains to back it up. (sic)"
Luke - who celebrated his 21st birthday on Sunday (26.12.10) - didn't immediately respond to Kelly's messages, but later simply wrote: "Lies on Twitter awesome. (sic)"